Query on game minimum requirements

I have windows xp with a 1.2 ghz,512 mb ram,256 mb nivdia video card. Im lookin at a game game that says min 1.8 ghz,I need to know if this means my pc will not play this game at all or will it just run slow? thanx for any help.

Well thanx for the posts guys but i just won me a new pc on ebay! Im sick with this old crappy pc. I now have 2 more questions if someone would be nice enough to help me. First did i get a good deal on the pc i won?
Its a AMD Athalon 2700 custom built (looks really cool) 2.2 ghz 40 gig hd.In total it cost me $262.20..I would show a link but dont know how lol.
My second question is what is the diff between dvd rom game and pc rom game? Thanx for help

depends. my processor is well below alot of games but my ram and video card are more tehn twice most requirements and i run these games on high graphics without lag. so if your ram and video card are good enought o compensate you should be fine.